A cabbie who ferries children to and from school was secretly filmed threatening to “smash his partner’s face in” during a vile tirade. Enraged Jay-Jay Baker launched a series of disgusting rants down the phone in Canterbury as the woman’s friend recorded. The 31-year-old hung his head in shame in the dock at Folkestone Magistrates’ Court, while he was forced to listen back to his lurid ramblings. During the call, Baker could be heard shouting and calling the mother of his children “a dirty w***e” and “a s*** “, claiming he would “smash her f****** face in”. At the time of his offending, Baker…